[Webkit-unassigned] [Bug 223198] New: acquiring videoTrack on 2nd instance mutes 1st instance

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=223198

            Bug ID: 223198
           Summary: acquiring videoTrack  on 2nd instance mutes 1st
                    instance
           Product: WebKit
           Version: Safari 14
          Hardware: Mac (Intel)
                OS: macOS 11
            Status: NEW
          Severity: Major
          Priority: P2
         Component: WebRTC
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: makarand at gmail.com
                CC: youennf at gmail.com

I am seeing this on Safari Version 14.0.3 running on Mac OS (11.2.1)

Open two instances of Safari ( let's call them A and B ) side by side.

On A) open https://makarandp0.github.io/twilio-video-api/ and click on "+ Local Video Track" 
      This simply calls GetUserMedia to acquire a video track and renders it in a Video Element. It also shows state of the track.

On B) repeat the same step on B, notice that video track on A gets muted and turns black.

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